Removed polyfill implementation and updated struct and constants required

Author: Jesse Hoogervorst

src/vxworks/mod.rs

@@ -413,13 +413,13 @@ s! {
         pub mq_curmsgs: ::c_long,
     }
 
-    pub struct FLock {
-        l_type: ::c_short,
-        l_whence: ::c_short,
-        l_start: ::c_long,
-        l_len: ::c_long,
-        l_pid: ::c_short,
-        l_xxx: ::c_short,
+    pub struct flock {
+        pub l_type: ::c_short,
+        pub l_whence: ::c_short,
+        pub l_start: ::c_long,
+        pub l_len: ::c_long,
+        pub l_pid: ::c_short,
+        pub l_xxx: ::c_short,
     }
 }
 
@@ -955,10 +955,6 @@ pub const F_DUPFD_CLOEXEC: ::c_int = 14;
 pub const F_RDLCK: ::c_int = 1;
 pub const F_WRLCK: ::c_int = 2;
 pub const F_UNLCK: ::c_int = 3;
-pub const LOCK_SH: ::c_int = 1;
-pub const LOCK_EX: ::c_int = 2;
-pub const LOCK_NB: ::c_int = 4;
-pub const LOCK_UN: ::c_int = 8;
 
 // signal.h
 pub const SIG_DFL: sighandler_t = 0 as sighandler_t;
@@ -2029,35 +2025,6 @@ pub unsafe fn posix_memalign(
     }
 }
 
-pub unsafe fn flock(fd: ::c_int, operation: ::c_int) -> ::c_int {
-    let lock_type = match operation & !LOCK_NB {
-        LOCK_SH => F_RDLCK,
-        LOCK_EX => F_WRLCK,
-        LOCK_UN => F_UNLCK,
-        _ => {
-            errnoSet(EINVAL);
-            return ERROR;
-        }
-    };
-
-    let request = if operation & LOCK_NB != 0 {
-        F_SETLK
-    } else {
-        F_SETLKW
-    };
-
-    let mut argument = FLock {
-        l_type: lock_type as i16,
-        l_whence: SEEK_SET as i16,
-        l_start: 0,
-        l_len: 0,
-        l_pid: 0,
-        l_xxx: 0,
-    };
-
-    return ioctl(fd, request, core::ptr::addr_of_mut!(argument));
-}
-
 pub use ffi::c_void;
 
 cfg_if! {